, Boln. Asoc. esp. Ent., 26 (3-4): 2002: 75-91 ISSN: 0210-8984

Contribution to the knowledge of the family Mymaridae Haliday (Hymenoptera:

Chalcidoidea) in Navarra, North of Iberian peninsula

E. Baquero & R. Jordana

ABSTRACT

Thirteen species of the family Mymaridae Haliday (Hymenoptera, ChaIcidoidea) are added to the faunal list of Navarra (North of Iberian Peninsula): Alaptus fusculus Walker, A. pallidicornis Forster, Anaphes diana (Girault), Cleruchus sp., Dicopus minu­tissima Enock, Erythmelus flavovarius (Walker), E. panis (Enock), Eustochus atripennis Curtis, Litus cynipseus Haliday, Mymar taprobanicum Ward, Ooctonus vulgatus Haliday, Stephanodes similis (Forster) and Stethynium triclavatum Enock. Details about their European distribution and biology are also included. The specimens were collected with a Malaise trap in the locality of Cadreita, in the South of Navarra, and with a sweep net from corn fields in sixty localities around Navarra.

Keywords: Hymenoptera, Mymaridae, Zea mays, Navarra, Iberian peninsula.

RESUMEN

Contribucion al conocimiento de la familia Mymaridae Haliday (Hymenopte­ra: Chalcidoidea) en Navarra, norte de la peninSUla Iberica

Se afiaden trece especies de la familia Mymaridae HaJiday (Hymenoptera, ChaIcidoidea) a la fauna de Navarra (norte de la Peninsula Iberica): Alaptus fusculus Walker, A. pallidicornis Forster, Anaphes diana (Girault), Cleruchus sp., Dicopus minutissima Enock, Erythmelus flavovarius (Walker), E. panis (Enock), Eustochus atripennis Curtis, Litus cynipseus Haliday, Mymar taprobanicum Ward, Ooctonus vulgatus Haliday, Stephanodes similis (Forster) y Stethynium triclavatum Enock. Se incluyen detalles acerca de la distribuci6n de estas especies en Europa. Todos los ejemplares fueron recolectados utilizando una tramp a Malaise, colocada en la locali­dad de Cadreita, y una manga entomol6gica, en campos de maiz de 60 localidades a 10 largo de Navarra.

PaJabras clave: Hymenoptera, Mymaridae, Zea mays, Navarra, Peninsula Iberica.

76 E. Baquero & R. lordana

INTRODUCTION

The family Mymaridae was mentioned from the Iberian Peninsula for the first time by Ricardo GARcIA-MERcET (1912). Only fifteen species has been recorded later by ANNECKE & DOUIT (1961), DYSART (1971 ), AESCHLIMANN (1977), WORN ER et a1. (1989), LLORENS (1990), LLORENs & GARRlDO (1992), MANSILLA et. a1. (1995), CHIAPPINI et a1. (1996), HUBER & FlDALGO (1997) and BAQUERO & JORDAN A (1999).

In Navarra the corn is cultivated without insecticides; this allow us to study the useful associated fauna to the pests present in the horticultural area of Navarra. A large number of mymarids were captured, especially Anagrus atomus (Linnaeus, 1767) and Gonatocerus litoralis (Haliday, 1833). Some species of the family Mymaridae reduce considerably the populations of Cicadellidae or Delphacidae (BENREY & LAMP, 1993).

The object of this work is to increase the knowledge of the family Mymaridae in the Iberian Peninsula, contributing with figures and measures (table I) that enable recogni­tion of the species found, and compare the specimens captured with those of other regions. This work is justified by the little knowledge of this family of Hymenoptera in the Iberian Peninsula.

MATERIALS AND METHODS

The specimens were collected with a Malaise trap near corn fields and peach trees in the locality of Cadreita (south of Navarra), from 18-VI-1992 to 3-IX-1992, and with a sweep net in sixty localities around Navarra, between 1992 and 1995 on corn leaves.

The studied material is deposited in the Department of Zoology and Ecology, Faculty of Sciences, University of Navarra.

List of sampling stations with details of UTM co-ordinates and altitude in meters: Ace­do, 30TWN62, 490 540 m; Amaiur (Maya), 30TXN2384, 282 m; Ancin, 30TWN6623, 482 m; Aniz, 30TXN1675, 380 m; Arga (rio); Arguedas, 30TXM1767, 243 m; Arrayoz, 30TXNI779, 140 m; Bacaicoa, 30TWN7449, 515 m; Bigtiezal, 30TXN5324, 1100 m; Ca­dreita, 30TXM0673, 276 m; Caparroso, 30TXMI090, 321 m; Castej6n, 30TXM0771, 273 m; Corella, 30TXM0869, 370 m; Echarren, 30TWN9650, 460 m; Elgorriaga, 30TXN0777, 144 m; Elizondo, 30TXN2078, 202 m; Erice, 30TWN0148, 652 m; Eulz, 30TWN7727, 470 m; Huarte-Arakil, 30TWN8655, 471 m; Iraileta, 30TWN8753, 459 m; Irati, 30TXN46, 900 m; Marcahiin, 30TXN0751, 480 m; Marcilla, 30TXM0487, 290 m; Mintxate, 30TXN6955, 900 m; Murieta, 30TWN6923, 465 m; Narvarte, 30TXN1176, 138 m; Oieregui, 30TXN1278, 135 m; Peralta, 30TWM9888, 292 m; Sangiiesa, 30TXN4117, 404 m; Santesteban, 30TXN0876, 123 m; Sorogain, 30TXN3062, 800 m; Urdiain, 30TWN7149, 549 m; Urzainqui, 30TXN6743, 725 m.

RESULTS

From 94,083 arthropods extracted from 72 samples, 7.72% were mymarids, 61.64% of which belonged to the genera Anagrus Haliday and 17.88% to the species Mymar taprobanicum Ward. The rest of genus considered in this paper are poorly represented in the samples. Zyginidia scutellaris (Herrich-Schaffer, 1838), was the more abundant cicadellid in these fields, but Macrosteles sexnotatus (Fallen, 1806) and Psammotettix alienus (Dahlbom, 1951) were also present.

A/aptus Alaptus Anaphes Cleruchus Dicopus Erythmelus Erythmelus j llscuills pallidicomis diana sp. minutissima panis fla vovarills

Body 0.5 1 0.42 0.59 0.89 0.46 0.55-0.66 0.58 metasoma: 0.62±0.04

0.42

Scape 0.062 0.068 0. 110 0. 11 0 0.075 0.080-0.092 0. 100 0.087±0.004

Pedicel 0.033 0.040 0.042 0.038 0.030-0.037 0.040 0.033±0.002

FI 0.030 0.030 0.0 15 0.037 0.0 14-0.017 0.013 0.0 15±0.00 1

F2 0.045 0.045 0.033 0.020 0.026 0.0 12-0.019 0.0 18 0.0 17±0.002

F3 0.040 0.038 0.047 0.022 0.028 0.020-0.023 0.0 18 0.02 1 ±O.OO 1

F4 0.035 0.035 0.045 0.022 0.032 0.022-0.032 0.020 0.029±0.003

F5 0.034 0.032 0.050 0.022 0.032 0.052-0.063 0.020 0.060±0.004

F6 0.045 0.022 0.032

F7 0.030

F8

Clava 0.097 0.090 0. 11 0 0.095 0.092 0.092-0. 11 0 0.100 0.10 I ±0.005

FWL 0.45 0.44 0.60 0.52 0.39 0.35-0.44 0.44 0.40±0.03

FWW 0.050 0.044 0.082 0.038 0.040 0.050-0.065 0.085 0.058±0.004

LIW 9.0 10 7.32 13.68 9.75 6.3 1-7.64 5.18 6.92±0.45

FLMC 0.18 0. 18 0.15 0.17 0.21 0. 19-0.22 0.1 5 0.21 ±0.01

C/FWW 3.6 4.09 1.83 4.47 5.25 3.15-3 .82 1.82 3.57±0.20

Fore tibia 0.16 0. 14 0.21 0.15 0.15 0.120-0.145 0.14 0.142±0.012

Ovip. L 0.24 0.18 0.135 0.24 0.09 0.20-0.22 0.1 85 0.2 1±0.01

O/T3 1.50 1.28 0.64 1.62 0.60 1.33- 1.67 1.28 1.49±0.09

n° of n=1 n= I n= I n= I n= 9 n= I measures

(Continuaci6n Tabla 1)

Eustochus Litus Mymar Ooctonus Stephanodes Stechynium atripennis cynipseus taprobanicum vulgatus similis triclavatum

Body 0.95-1 .32 0.65-0.70 0.70-0.78 1.22 0.94-1.30 0.68-0.89 1.09±0.12 0.069±0.02 1.12±0.1O* 0.76±0.07

Petiole 0.41-0.60 0.12 0. 16-0.20 0.47±0.07 0.18±0.01

Metasoma 0.14-0.18 0.48 0.41-0.47 0.16±0.01 0.44±0.02

Scape 0.125-0.180 0.14-0.1 6 0.250-0.230 0.170 0.100-0.110 0.060-0.078 0.144±0.020 0.15±0.01 0.103±0.005 0.067±0.006

Pedicel 0.060-0.075 0.05 0.052-0.055 0.060 0.042-0.050 0.032-0.041 0.070±0.005 0.048±0.003 0.037±0.003

FI 0.065-0.085 0.03 0.055-0.060 0.055 0.080-0.092 0.025-0.034 0.072±0.006 0.084±0.004 0.028±0.003

F2 0.066-0.088 0.04 0.245-0.270 0.050 0.090-0.108 0.032-0.042 0.074±0.008 0.099±0.006 0.037±0.003

F3 0.064-0.078 0.03-0.04 0.025-0.030 0.045 0.072-0.084 0.023-0.033 0.069±0.004 0.077±0.005 0.030±0.003

F4 0.055-0.064 0.03-0.04 0.028-0.032 0.032 0.060-0.070 0.023-0.033 0.057±0.003 0.063±0.004 0.029±0.003

F5 0.043-0.055 0.03 0.030-0.032 0.032 0.050-0.065 0.023-0.032 0.047±0.004 0.058±0.005 0.028±0.002

F6 0.038-0.047 0.03-0.04 0.045 0.030 0.057-0.072 0.025-0.040 0.042±0.003 0.063±0.005 0.032±0.003

F7 0.044

F8 0.040

Clava 0.138-0.160 0.14-0.15 0.130-0.138 0.115 0.1 36-0.150 0.103-0.122 0.1 44±0.007 0.14±0.01 0.145±0.005 0.112±0.005

FWL 0.98-1.28 0.71-0.78 1.00-1.05 0.97 1.\8-1.27 0.54-0.66 1.09±0.11 0.75±0.03 1.24±0.03 0.61±0.04

FWW 0.29-0.43 0.05-0.06 0.110-0.120 0.33 0.28-0.33 0.123-0.170 0.35±0.05 0.3 I ±0.02 0.151±0.013

LfW 2.91 -3 .38 12.98-14.60 8.69-9.54 2.94 3.81-4.27 3.81-4.42 3.13±O.15 13.85±0.64 4.05±0.167 4.41±0.18

FLMC 0.15-0.22 0.25-0.30 0.34-0.37 0.082 0.14-0.15 0.140-0.170 0.17±0.02 0.26±0.02 0.14±0.005 0.153±0.0 1 0

CIFWW 0.35-0.54 4.31-5.45 2.83-3.36 0.24 0.42-0.53 0.82-1.26 0.49±0.06 4.91±0.54 0.47±0.04 1.02±0.10

Fore tibia 0.42-0.56 0.25-0.27 0.41-0.44 0.35 0.36-0.42 0.180-0.225 0.49±0.04 0.26±0.01 0.39±0.02 O.198±0.012

Ovip. L 0.86-1.12 0.22-0.24 0.25-0.27 0.38 0.26-0.29 0.27-0.33 0.95±0.08 0.23±0.01 0.27±0.02 0.30±0.02

Orr3 1.70-2.15 0.81-0.92 0.59-0.63 1.09 0.66-0.72 1.38-1.61 1.96±0.13 0.87±0.04 0.70±0.02 1.53±0.06

nO of n= 8 n= 5 n= 3 n= 1 n= 7, n=16 measures * n= 17

Table I: Measurements (Min-max. mean±sd, in mm) of some females captured in Navarra. Abbreviations: FI·F6, = funicular articles. FWL = fore wing length; FWW = fore wing width; LIW = length/width ratio of fore wing; FLMC = longest marginal ci lia of fore wing. C/FWW = longest marginal cilia of the fore wing/width of fore wing ratio. HWL = hind wing length; HLMC, hind wing longest marginal cilia. Fore tibia = length of fore tibia. Ovip. L = length of the ovipositor. Orr3 = ovipositor/fore tibia lengths ratio.

Alaptus fusculus Walker, 1846 Figs. lA, 5A.

Mymaridae of Navarra 79

Distribution: described by WALKER (1846) from a specimen captured by Haliday from England. SOYKA (1948) found the species in Germany and Netherlands. DEBAUCHE (1948) mentioned its presence in Belgium (one female).

Hosts: HINCKS (1959) cited the capture of this species by Dr. E. Broadhead as parasitoid of eggs of the psocoptera Mesopsocus immunis (Stephens, 1836) and M. uni­punctatus (MUlier, 1764) from England. It was cited ex eggs of the psocoptera Stenop­socus (=Graphopsocus) cruciatus (Linnaeus, 1768) by Enock (KRYGER, 1950).

Material examined: Cadreita (30-11-1992, I S?: 20-VII-1992, IS?: 24-IX-1992; I ,,: 24-IX-1992, I S?), E. Baquero leg.

Alaptus pallidicornis Forster, 1856 Figs. I B, 5B. Distribution: there are many references from England excluding the type material.

Later has been cited from Germany and Netherlands (SOYKA, 1939), Belgium (DEBAUCHE, 1948), Egypt (SOYKA, 1950), Bulgaria (DONEV, 1978) and Denmark (TRJAPITZIN, 1978).

Hosts: the first reference is over eggs of Stenopsocus cruciatus Linnaeus, 1767 (In­secta, Psocoptera) from England (KRYGER, 1950). DEBAUCHE (1948) found this species ex Peridela pedicularia (Linnaeus), 1758 on Taxus baccata Linnaeus. It has been reared on leaves of Laurocerasus officinalis Linnaeus infested with psocids from England (HINCKS, 1959).

Discussion: the diagnostic characteristic of the descriptions of thi s species agree with those of the specimen captured. There are only some differences between the an­tennal segment F2 and the ovipositor following the measurements of DEBAUCHE (1948).

Material examined: Cadreita (24-IX-1992, I S? ). E. Baquero leg.

Anaphes (Anaphes) diana (Girault, 1911) Figs. 1 C, 5e.

Distribution: this species was described from England. Later has been cited from France, Iberian Peninsula (,Catalufia' and' Andalucfa'), south of Italy, Rumania, Bulgaria, Greece, Turkey, Iraq, Algeria, Morocco, New Zealand and Syria (AESCHLI­MANN, 1986). Some biotypes from France and Greece were imported to Australia in 1976. The introduction failed probably due to dry climate (AESCHLIMANN, 1986; AESCHLIMANN et aI., 1988). SCHAUFF (1984) cited this species from U.S.A. because importation and rearing.

Hosts: this minute mimarid has a clearly preference for the eggs of Coleoptera, and specially for the Curculionidae of genus Sitona (Coleoptera, Curculionidae, Brachyderi­nae) (AESCHLIMANN, 1986). This author has demonstrated that the species is capable to live over some species of Sitona.

Biology: its reproduction is partially bisexual with arrhenotokous parthenogenesis, thelytokous in females segregated each other (AESCHLlMANN, 1975). Posterior studies ha­ve demonstrated that bisexual and thelytokous parthenogenetic specimens live together in the nature (AESCHLlMANN, 1986).

80 E. Baquero & R. lordana

Material examined: Cadreita (24-IX-\992, I 9), E. Baquero leg.

Cleruchus sp. 1 Figs. 2A, SE.

Hosts of the genus: C. fransseni from Java was described from specimens obtai­ned ex eggs of Locustidae (Orthoptera). Other undetermined species, from Malaysia, was cited ex eggs of Callimerus arufer (Coleoptera, Cleridae) (SUBBA RAO & HAYAT, 1983).

Discussion: the measurements of the ovipositor allow us to discriminate our speci­mens from the species described (TRJAPITZIN, 1978). The most similar species seems C. megatrichus Novicky, 1965 due to the similarity of the long wing microtrichias and the number of the cilia on the anterior margin of the wind.

Material examined: Sorogain (2S-V-1996, 19, yellow pall·trap in beech forest) , Acedo (2-IX-1997, 2 99, grass under Quercus). E. Baquero leg.

Dicopus minutissima Enock, 1909 Figs. 2B, 5F.

Distribution: Only know from England.

Hosts: the genus has been cited as parasitoid of Diaspididae (HUB ER, 1986).

Discussion: we have found a small difference in the length of the clava between the captured specimen and the description of the species.

Material examined: Arga river (upper part) (date of capture missing. \ 9), J. Arbea leg.

Erythmelus flavovarius (Walker, 1846) Figs. 2C, 5G.

Distribution: the type material was obtained from England (ENOCK, 1909 and 1914). Later, the species was cited from Belgium (DEBAUCHE, 1948). TRJAPITZIN (1978) refer his presence from Netherlands and Denmark.

Hosts: unknown.

Discussion: there is a small difference in the chaetotaxy and in the general dimen­sions given by DEBAUCHE (1948). Nevertheless, the specimens obtained have been iden­tified as E. flavovarius (Walker, 1846) using the descriptions of the European species.

Material examined: Arguedas (19-VII-1993, 19). Cadreita (24-IX-1992, 19 ; 7-X-1992, 19), E. Ba­quero leg.

Erythmelus panis (Enock, 1909) Figs. 2D, 5H.

Distribution: described by ENocK from England (1909). Posterior references: Belgium (DEBAUCHE, 1948), England, Denmark and Austria (TRJAPITZIN, 1978).

Hosts: unknown.

Material examined: Oieregui (20-VJ\-1994, I 9 and I cl), Elizondo (20-VII-\994, I cl), Santesteban (20-VII-1994, (9), Arrayoz (20-VII-1994, 19 and 10 ). Aniz (20-VIl-1994, I 'l'), Elgorriaga (20-VII-1994,

Mymaridae of Navarra 81

I 0 ), Amaiur (20-VIl-1994, I )' and 10 ), Urdax. 20-VII-1994, 10 ), Echarren (20-VII-1995, I )'), Ancin (18-VIII-1995, I )' ), Sangiiesa (28-VIII-1995, 6)' )' y 10 ), Cadreita (24-IX-1992, \0 )' )' ; 24-IX-1992, 3)' )'; 07-X-1992, I 'i'). E. Baquero leg.

Eustochus atripennis Curtis, 1832 Figs. 3A, 51.

Distribution: Described by Walker from a specimen collected on grass in a forest near Middlesex. Later was cited some times from England until its reference from Belgium by DE­BAUCHE (1948) in a sample of dead leaves. The last references are from Denmark, Germany (KRYGER, 1950) and Switzerland, with description of the male (VIGGIANI, 1970).

Hosts: unknown.

Discussion: the specimen deposited in the Spinola Coil. (Turin) was designed as neotype by Graham (1982), considering it originally from Ireland because HALlDAY (1833) cited E. atripennis in his 'Irish Insects' catalogue.

Material examined: Bigiiezal, oak forest (17-VI-1982, 2'i' 'i': 31-VIll-1 982. 3'i' 'i'), Erice, beech forest ( 17-VI-1982, I )' ), Irati ( 18-IX-1982, I )' ). Urzainqui (13-VI-1990, I 'i'), E. Baquero leg.

Litus cynipseus Haliday, 1833 Figs. 3B, 51.

Distribution: described and cited from England (HALlDAY, 1833; WALKER, 1846; FORsTER, 1847; ENOCK, 1909) . Later has been found from Denmark as L. krygeri (KIEF­FER, 1913), Belgium (DEBAUCHE, 1948) and Italy (VIGGIANI, 1973). In TRJAPITZIN (1978) is cited its presence from East Europe.

Hosts: KIEFFER (1913) described L. krygeri from specimens obtained ex eggs of Ocypus olens L. GIRAULT (1914) cited this species as parasitoid of Hydrometridae. VIGGIANI (1973) desclibed the male from specimens reared from eggs of Staphylinus sp. and Ocypus olens L.

Material examined: Erice (I7-VI-1982, I )', trap in a larch forest of Larix sp.), Marcalain (4-VI-1986, 2 )' )' , pinewood), Mintxate (18-VII- I 990, I 'i' , trap in a mountain meadow of a beech forest), lrati (28-IV to 23-VIII-2000, 2 I 'i' 'i' , pit fall and Malaise trap in a beach-silver fir forest) , E. Baquero leg.

Mymar taprobanicum Ward, 1875 Figs. 3C, 5K.

Distribution: WARD (1875) described this species by from Ceylon (Sri Lanka). Later indistinguishable specimens were captured from South Africa (ANNECKE, 1961), Puerto Rico (Mymar antillanum Dozier, 1937), Australia (Mymar tyndalli Girault, 1912) and Egypt (Oglobiniella aegyptiaca Soyka, 1950) (ANNECKE, 1961). In 1966, VIGGIANI cited the presence of the species from Italy. In the Iberian Penin­sula, until the present reference, this species has been cited from Los Monegros (ASKEW, 1998) .

Hosts: although is present in distant regions, there are no precise references about its biology, or relation with hi s habitual host. SUBBA RAo & H AYAT (1983) refereed its supposed relation with trips (Insecta, Thysanoptera) (the original reference is FALLEN, that saw a female feeding beside them). This species has been cited as responsible of reduce the density of cicadellids and delfacids in rice field s in Thailand (BENREY & LAMP, 1993).

S2 E. Baquero & R. lordana

Discussion: MANI (1942) described the species Mymar indicum from a unique specimens (male) , but VIGGIANI (1966) stated that probably was the male of Mymar taprobanicum Ward, 1875. The species was definitively synonymyzed by SUBBA RAO & HAYAT (1983). In the collection of samples of corn fields from Navarra, is interes­ting that only three males have been captured (from 1142 specimens in total) .

Material examined: Cadreita (30-VI-1992, 6??: 20-VII-1992, 12 ? ?; 06-VIII-1992, 22?? ; 26-VIII-1992, 70??; 03-IX-1992, 166? ?: 24-IX-1992, 325?? and 10 ; 04-VIII-1992, 20S??; 26-VIII-1992, 55?? and 10; 03-IX-1992 . 78??: 24-IX-1992, 112??: 07-X-1992, 76? ?: 30-X-1992, 5 ? g), Caparroso (25-VIII-1993, I?), Marcilla (25-VIII-1993. I?), Castejon (25-VIII-1993, 2 ? g), Peralta (I-XII-97, 10), E. Baquero leg.

Ooetonus vulgatus Haliday, 1833 Figs. 3D, 5L.

Distribution: the species was described from England. Later was cited by Debau­che as a new species, Ooctonus wesmaeli Debauche, 1948 from Belgium. MATHoT (1969) cited its presence from Norway.

Hosts: unknown. Other species of the genus are egg parasitoids of Cicadellidae and Cercopidae.

Discussion: HINCKS (1952), after the study of many European specimens stated that Ooctonus vulgatus HaJiday, 1833 cited by SOYKA (1950), it was a new species: Oocto­nus soykai Hincks, 1952.

Material examined: Arrayoz (27-IV-1991, I ?), E. Baquero leg.

Stephanodes similis (Forster, 1847) Figs. 4C, 50.

Distribution: described from Germany (FoRsTER, 1847). Its actual distribution is very wide and includes Europe, North America and Argentina. It was cited from Navarra by HUBER & FIDALGO (1997).

Hosts: unknown. Other species of the genus are egg parasitoids of Nabidae and Cicadellidae (HUB ER & FIDALGo, 1997).

Discussion: this is the unique species of the genus presents in Europe. Material examined: Cadreita (30-VI-1992, 3??; 06-VIII-1992, 10: 03-IX-1992, I ?; 24-JX-1992,

2 ? 9 and 10 ), Corella (l9-VII-1993. 10), Caparroso (17-VIII-1993, I? and 30 0; 25-VIII-1993 ; 299 and 400). Castejon (25-VIII-1993, 29? and 500), Corella (17-VII-1994, 19), Lodosa (19-VII-1994, 19 and 10), Calahorra (La Rioja, 19-VII-1994, 19), Lodosa (l9-VII-1994, 1 g), Narvarte (20-VII-1994, 1 g), Echa­rren (20-VII-1995, 3?? and 10), Huarte-arakil (20-VII-1995, I?), Bacaicoa (20-VII-1995, 1O? 9 and 400), Urdiain (20-VII-1995, 10), Eulz (IS-VIII-1995, I ? and 10), Murieta IS-VIII-1995, 19 and 10), E. Baquero leg.

Stethynium trielavatum Enock, 1909 Figs. 40, 5P, 5P'.

Distribution: Europe, North America and the Indian subcontinent. In Europe is present from England, Belgium, Germany, France, Austria, Denmark and Rumania (HUBER, 1987).

Hosts: species exclusively related with cicadellid eggs (Homoptera, Cicadellidae). HUBER (1987) listed the references known until the moment for the species host's.

Mymaridae of Navarra 83

Discussion: HUB ER (1987) designed the type material. In the same paper stated that the specimens from India are approximately a 20% smaller that European and American. Mentioned a fossil species too: Stethynium townesi Thur6czy, 1983 found from Baltic Amber and described by him as very similar to Stethynium triclavatum Enock, 1909 although with some differences in the winds and antennae of the holoty­pe (a female).

Material examined: Cadreita (30.06.1992, I?; 24.09.1992, 9?? and 10; 03.09.1992, 3??; 24.09.1992, 9? ?; 07.10.1992, 13? ?; 30.1O.1992,4? ?), Irafieta (20.07.1995, I?). E. Baquero leg.

Other genera

In the study some specimens for a species of Camptoptera Forster (Figs. ID, 5D) and for at least two species of Polynema Haliday (Figs. 4A-B, 5M-N) have been captu­red. These two genus include a great number of species described by Soyka from Austria and other countries with superficial descriptions or without any description. At this moment, and waiting a revision of the type material of this author, is very difficult identify with certainty the species of these two genera.

ACKNOWLEDGMENTS

We are very grateful to John T. Huber (Canadian National Collection) for his kind suggestions. We are specially grateful to Ma Socorro Tellechea (Department of Zoology and Ecology, University of Navarra), who helped us in the sample extraction. Part of this work was supported by a grant of Navarra Government (441/1992) and the Project CICYT IN92-0225, Infrastructures of Investigation, Spain.

REFERENCES

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Fecha de recepcion: 14 jUllio 2002 Fecha de aceptacioll: 15 oClUbre 2002

Enrique 8aquero y Rafael Jordana. Departamento de Zoologia y Ecologia Universidad de Navarra Apartado 177.31080 Pamplona Telefono: +34948425600 Fax: +34948425649. Correo electronico: ebaquero @unav.es

Mymaridae of Navarra 87

Figure 1: A, Alaptus fusculus Walker; B, A. pallidicornis Forster; C, Anaphes diana (Girault); D, Campto­ptera sp. I. Bar: 0,1 mm

88 E. Baquero & R. lordana

Figure 2: A, Cleruchus sp.l; B, Dicopus minutissima Enock; C, Erythmelus flavovarius (Walker); D, E. panis (Enock). Bar: 0, I mm

Mymaridae of Navarra 89

Figure 3: A, El/slOelll/s atripellllis Curtis; B, LiIlIS cy"ipsells Haliday; C, Mymar taproballiclIm Ward (fore and hindwing); D, OoclOnl/s vu/garl/s Haliday. Bar: 0 , I mm

90 E. Baquero & R. lordana

Figure 4 A, Polynema sp.l; B, Polynema sp.2; C, Stephanodes similis (Forster), D, Stethynium triclavatum Enock. Bar: 0, I mm

Mymaridae of Navarra 91

Figure 5: A, Alaptus fusculus Walker; B, A. pallidicomis Forster; C, Anaphes diana (Girault); D, Camptopte­ra sp. I; E, Cleruchus sp.l; F, Dicopus minutissima Enock; G, Erythmelus flavovarius (Walker); H, E. panis (Enock); I, Eustochus atripennis Curtis; J, Litus cynipseus Haliday; K, Mymar taprobanicum Ward; L, Oocto­nus vulgatus Haliday; M, Polynema sp.l; N, Polynema sp.2; 0, Stephanodes similis (Forster); P, Stethynium triclavatum Enock, female; P', S. triclavatum, male. Bar: 0,1 mm.